How to convert case in javascript

js letter case conversion method: 1. Convert to uppercase, toUpperCase(), syntax format "Object.toUpperCase()"; 2. Convert to lowercase, toLowerCase(), syntax format "Object.toLowerCase() )".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

js letter case conversion method:

1. Convert to uppercase: toUpperCase()

2. Convert to lowercase: toLowerCase()

3 , Example:

    （1）var a="aBcD";
            a=a.toUpperCase();
            alert(a);
            提示出来的就是 ABCD
    （2）var a="aBcD";
            a=a.toLowerCase();
            alert(a);
            提示出来的就是 abcd

[Recommended learning: javascript advanced tutorial]

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